C 1500 Truck 2WD V8-350 5.7L (1989)
TCC ENABLED
This may occur if the transmission is over temperature and there is a short in the white wire between the TCC and the TCC switch.
TCC ENABLED
IN SECOND
FOURTH
This may occur if there is a short between the temperature switch and the ECM.
ROUGH ENGINE
If the transmission has a fourth gear switch and there is a short between the switch and the ECM, the ECM will always receive a signal that the
transmission is in fourth gear. This may affect engine performance if spark timing depends on transmission gear information.
